Atlas Copco Oil-Injected Rotary Screw Compressor GA37_16

Replace the filter element of the electric cabinet

Open the manual drain valve (Dm) to clean the filter of the automatic drain

Test the temperature shut-down function

On water-cooled units: any water leakage found?

Condensate discharged when pressing the test button on top of the electronic water drain?

On compressors with integrated dryer

Compressor stopped, air outlet valve closed and voltage switched off?

Any dirt removed from the condenser inlet with a vacuum cleaner?

Cleaned with an air jet in the reverse direction of the normal flow using low pressure air?

Kept the compressed air nozzle more than 30 cm away from the condenser to avoid damaging the of condenser fins?

Removed dust from inside the dryer, e.g. with a vacuum cleaner?

Do not use water or solvents to clean the condenser

Sign off on the monthly maintenance

Refrigeration dryers of ID type contain refrigerant HFC. When handling refrigerant, all applicable safety precautions must be observed.

Contact of refrigerant with the skin will cause freezing. Special gloves must be worn. If contacted with the skin, the skin should be rinsed with water. On no account may clothing be removed.

Fluid refrigerant will also cause freezing of the eyes; always wear safety glasses.

Refrigerant is harmful. Do not inhale refrigerant vapours. Check that the working area is adequately ventilated.

Be aware that certain components such as the refrigerant compressor and the discharge pipe can become quite hot (up to 110 °C - 230 °F). Therefore, wait until the dryer has cooled down before removing the panels.

Before starting any maintenance or repair work, switch off the voltage and close the air inlet and outlet valves.

Did you follow all the safety precautions?

Sign here to confirm that you followed all the safety precautions.

WARNING! The operator must apply all relevant Safety precautions

Always drain the compressor oil at all drain points. Used oil left in the compressor can contaminate the oil system and can shorten the lifetime of the new oil

Never mix lubricants of different brands or types as they may not be compatible and the oil mix will have inferior properties. A label, indicating the type of oil filled ex-factory, is stuck on the air receiver/oil tank

Run the compressor until warm. Stop the compressor after 3 minutes of unloaded operation. Close the air outlet valve and switch off the voltage. Wait a few minutes and depressurise by unscrewing oil filler plug (FC) just one turn to permit any pressure in the system to escape

Air cooled units: loosen the vent plug (VP) of the oil cooler and wait for 5 minutes

Remove drain plug (DP1) and open drain valve (Dm)

Also drain the oil by removing the drain plug: on the check valve and on the gear casing

Collect the oil in a collector and deliver it to the local collection service. Refit and tighten the drain and vent plugs after draining

Warning: Dispose of the collected condensate according to local regulations for oil containing water

Open the condensate sample valve at the side of the compressor for 5 seconds

Re-open the test valve and collect the condensate in the test bottle

Compare the turbidity of the sample with the 15 ppm turbidity reference bottle

Is the turbidity of the test sample more intense than the reference turbidity?

If the turbidity of the test sample is more intense than the reference turbidity, a request for servicing should be initiated, to be carried out within 2 weeks time.

Sign off on the condensate check